High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 211502
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC WED FEB 21 2018

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS

SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT
OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE MORE THAN
TWICE THE SIGNIFICANT WAVE HEIGHT.

THIS HIGH SEAS FORECAST USES 1-MINUTE AVERAGE WINDS WHICH MAY BE
HIGHER THAN 10-MINUTE AVERAGE WINDS.

SECURITE

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 1200 UTC FEB 21 2018.
24 HOUR FORECAST VALID 1200 UTC FEB 22 2018.
48 HOUR FORECAST VALID 1200 UTC FEB 23 2018.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 29N160W 1012 MB. TROUGH 30N159W THROUGH LOW TO 22N160W. LOW
AND TROUGH MOVING NW 10 KT.
.24 HOUR FORECAST LOW MOVED N OF AREA. TROUGH 30N162W 24N163W.
.48 HOUR FORECAST TROUGH MERGED WITH TROUGHS DESCRIBED BELOW...
 30N167W 20N165W 12N168W.

.TROUGH 24N156W 19N155W MOVING NW 10 KT.
.24 HOUR FORECAST TROUGH 25N158W 20N157W.
.48 HOUR FORECAST TROUGH MERGED WITH TROUGHS DESCRIBED ABOVE AND
BELOW.

.TROUGH 15N162W 06N173W MOVING NW SLOWLY.
.24 HOUR FORECAST TROUGH 18N161W 09N170W.
.48 HOUR FORECAST TROUGH MERGED WITH TROUGHS DESCRIBED ABOVE.

.TROUGH 30N180W TO 24N180W MOVING W SLOWLY.
.24 HOUR FORECAST 30N176E 25N178E.
.48 HOUR FORECAST TROUGH DISSIPATED.

.ITCZ 09N140W 10N155W 12N160W. SCATTERED STRONG TSTMS FROM 13N TO 09N
BETWEEN 143W AND 148W AND FROM 18N TO 11N BETWEEN 155W AND 158W.

.RIDGE 30N170E 26N160E MOVING NW SLOWLY.

.E TO SE WINDS 20 TO 30 KT NE OF LINE 10N140W 12N150W 20N145W
30N163W.
.24 HOUR FORECAST NE TO SE WINDS 20 TO 25 KT NE OF LINE 10N140W
13N150W 30N155W. E WINDS 20 TO 25 KT FROM 19N TO 09N W OF 180W.
.48 HOUR FORECAST NE TO SE WINDS 20 TO 25 KT NE OF LINE 09N140W
09N150W 20N160W 30N158W. NE WINDS 20 TO 25 KT FROM 18N TO 07N W OF
180W.

.SEAS 12 TO 14 FT N OF 28N BETWEEN 152W AND 164W...SEAS LESS THAN 8 FT
NW OF LINE 30N172E 22N160E AND FROM 20N TO 10N BETWEEN 155W AND
165W...SEAS 8 TO 12 FT ELSEWHERE N OF 10N.
.24 HOUR FORECAST SEAS 8 TO 11 FT NE OF LINE 10N140W 08N175E 15N165E
30N175W.
.48 HOUR FORECAST SEAS 8 TO 12 FT NE OF LINE 07N140W 20N160W 30N165W.
SEAS 8 TO 9 FT FROM 18N TO 10N W OF 180W.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

$$
.HONOLULU FORECASTER.


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